Remove gwt-gadget
GTNPORTAL-3318 - Added EAP 6.2 profile

Added a profile for EAP 6.2. This required a few changes in the code, which should be completely backwards compatible.
GTNPORTAL-3257 REST MOP Import doesn't detect errors on commit
GTNPORTAL-3331: Add DevicePropertyConditionWrapper to clear existing properties when setting new ones, so they don't persist.
GTNPORTAL-3339 Upgrade PortletBridge to the version 3.3.1.Final
GTNPORTAL-2072 NoSuchDataException is thrown after importing pages through export/import tool
GTNPORTAL-3323 UI should reflect changes when data is modified through backend services
GTNPORTAL-3341 Treat empty attribute values of UserProfile as null. Add passwordSalt to 'non-profile attributes
GTNPORTAL-3342 Use shared SecureRandomService per whole RootContainer
GTNPORTAL-3343 NPE during social registration